Window-shade roller.



L.- TROPP & B. RIVKIN.

WINDOW SHADE ROLLER.

APPLICATION FILED FEB.16. I915.

1 1 96,?25 v, Patented Aug. 29, 1916.

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LEOPOLID TROPP, OF BROOKLYN, AND BERT RIVKIN, OF NEW YORK, N. Y., ASSIGNORS TO IDEAL SPRINGLESS SHADE ROLLER (30., INC, A CORPORATION OF NEW YORK.

WINDOW-SHADE ROLLER.

weaves.

Application filed February 16, 1915.

b all whom it may concern:

Be it known that we, LnoroLo Tuorr and BERT RIVKIN, citizens of the United States, and residents, respectively, of Brooklyn, in the county of Kings, and of New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Window-Shade Rollers, of which the following is a specification.

This invention relates to improvements in window shade rollers, and has for its objects the cheapness of manufacture and simplicity of construction.

The further objects are the ease of operation for raising and lowering the shade, a positive locking means for holding the shade at any height or position in regard to the window, and preventing the flapping of the shade by the wind from unwinding the shade.

The still further objects are to provide a shade of this character in which there are no latches or locking mechanism which have parts to register with other parts in order to lock the shade in a certain position and to have a shade with no parts which can get out of order: and to provide a shade of this character in which the friction surface for holding the shade in position (as to height) is increased as the area of the surface 6X- posed to the wind or draft is increased. and the area of the frictional surface for holding the shade is vastly increased over the old ways, and means for holding the shades from unwinding.

It will be seen that we have accomplished the foregoing, by referring to the accompanying drawings forming a part of this specification, in which Figure 1 is a sectional view taken through the winding drum; Fig. 2 is a sectional view taken through the shade and roller; Fig. 3 is a perspective view showing the parts which make up the winding drum, the parts being spread apart to more clearly show the device; Fig. 4 is a front elevation of the shade roller and drum and the shade re moved, with a part of the roller, drum and brackets broken away to clearly show the construction and how the parts are assembled; Fig. 5 shows a perspective of the most simple form of friction spring which can be used; Fig. 6 is a perspective view of Specification of Letters Patent.

Patented Aug. 29, 1916.

Serial No. 8,552.

the preferred form of friction spring; and Fig. 7 is a perspective view of another form of spring which may be used if desired.

It will be seen that we provide the usual shade l, which is wound upon a wooden roller 2 of the usual form and dimensions. Upon one end of the roller is a metal plate 3 which serves as a guide for the shade, but this plate is not absolutely necessary and may be dispensed with. In this same end is driven a nail 4, similar to the one shown in Fig. 3, and acts as a journal, the head 5 preventing the journal from slipping out of the hearing. The bracket 6 is made of stamped sheet metal and is of the same form as the ,bracket 7 supporting the opposite end of the roller in which the journal 8 revolves, and which consists of a stamped nail having a journal portion 9, a head 10 and a rectangular portion 11 that fits the rectangular openings 12 in the disks 13 and 14 which form the winding drum or sheave 15. All of the disks 3, 13 and 14 are made of sheet metal. The disks 3 and 14 are provided only with the rectangular opening in the center, while the disk 13 is formed with series of widely spaced prongs or tongues 16 punched out from the metal of the openings 17, and these prongs are used for two purposes: that is, they act as spacers to keep the disks 13 and 14 the proper distance apart when the journal is driven into the roller and hold the several parts together by means of the shoulder 18 of the journal 8 bearing against the disk 13 and the tongues 16 hearing against the disk 14, which in turn bears against the end of the roller. and thus everythilng is held securely together by the j ourna 8.

It will be noted that the three tongues 16 are so disposed as to form a triangle, and when the cord 19, which is secured in any suitable manner, is wound upon them as shown in Fig. 1 it forms a triangular drum or sheave 20 with three large flat surfaces 21 which adjust themselves so that the blade 22 of the spring 23 always lies flat upon one of these surfaces. For instance, when the cord 19 is half wound up on the drum the blade 22 will lie horizontally, and so will the surface 21, but if more than half of the cord is wound upon the drum and the shade is pulled well down the end 24 of the blade 22 will point up and the face 21 adjust itself to the blade and the tension of the blade will be increased. If the shade is pulled up and there is very little cord on the drum or sheave, the end2t will point downward, yet the surface 21 will also adjust itself to the blade 22-, but the tension will be lessened.

It will be notedthat the springs 23 have a portion 25 in which are holes 26 which register with the holes in the bracket 7 so that the same screws which hold the bracket will also hold the spring in position at the same time. s

It will also be noted that we have shown in our preferred form of spring between the portion 25 and theblade 22 a looped portion 27 which is provided with a hole 28 that is of larger diameter than the hole 26 or the body portion of the screw 29. The holes 28 and 26 are in register with each other, so that the screw 29 can pass through them into the casement of the window as shown in Figs. 1 and 2, and it will be seen that by either screwing the screw 29 in or out the tension between the blade 22 and the surface 21 can be either increased or lessened as desired. If desired either of the other springs shown in Figs. 5 and 7 may be used in place of the one shown in the other figures.

Referring to Figs. 1 and 2,v it will be seen that the cord 19 is wound on the drum in opposite direction to the direction in which the shade is wound on the roller, and it is evident that'when the cord is pulledand unwound the shade will be wound upon the roller and when the shade is pulled down, the cord is wound up.

If it is desired not to handle the shade so as to prevent it becoming soiled, or if the shade is in a place, such as a store window, where it is not convenient to take hold of the shade we put a drum on each end of the roller with their cords wound in opposite directions and use one for raising the shade and the other for lowering it. This is very desirable Where the shades are large and heavy, as the twoblades 22 acting on the drums allow the blades to be more flexible Gopies' of thil' patent may be obtained for and still hold the shade securely in any position.

We claim as our invention:

1. In a shade device, the combination with the roller of a cord sheave fast to the roller, a cord wound on the sheave, the sheave having the bottom of its groove arranged to cause the cord to wind thereon to form a series of flat faces, and a spring arm having a flat end portion arranged to engage said fiat cord faces in succession as the roller is turned, to yieldably retain the roller in different positions.

2. In a shade device, the combination with the roller, of a cord sheave fast to the roller, a cord wound on the sheave, the sheave having at the bottom of its groove a series of widely spaced lugs arranged to cause the cord to wind thereon toform a series of flat faces, and a spring arm having a fiat end portion arranged to engage said flat faces of the wound cord in succession as the roller is turned, to yieldably retain the roller in different positions.

3. In a shade device, the combination with the roller, of a cord sheave fast to the roller, the sheave comprising a flange on the roller forming one side thereof, and an aperturcd disk having a ser es of widely spaced lugs bent up transverse to the disk, a journal. bolt passing through the disk center and into the roller to secure the disk with its lugs engaging the flange disk to space the disks apart, a cord wound upon said lugs to form a series of flat faces between said disk, and a spring arm having a flat end portion arranged to engage the flat cord faces in succession as the roller is turned, to yieldably retain the roller in different positions.

Signed at New York, in the county of New York and State of New York, this 11th day of February, A. D. 1915.

LEOPOLD TROPP. BERT RIVKIN.

Witnesses SELMAN Lrss, MORRIS TURITZ.

fiv ce'n'ts each, by addressing the "Commissioner of Patents, Washington, D. 0." o 

